Looking at LinkedIn and MasterCard

We review articles that seek to handicap where these stocks are heading. And should anyone leave the market in May?

Investors with a big stake in MasterCard should be forgiven if they have a generally sunnier view of planetary life than the rest of us.

After all, MasterCard (ticker: MA), and its card-processing rival Visa (V), have soundly outpaced the broader market in recent years, thanks to sitting atop a great global business with huge barriers to entry....